基于波长-时间映射的超快成像装置

By using an ultrafast imaging device based on wavelength-time mapping, and by employing multimode fiber bundles and spatial spectral recovery algorithms, the problems of complex devices and low temporal resolution in existing technologies are solved, and efficient ultrafast imaging is achieved.

CN116400558BActive Publication Date: 2026-07-17SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
Filing Date
2023-03-20
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing ultrafast imaging methods, such as time-series all-optical imaging devices, are complex, difficult to operate, have a small number of sub-pulses that can be measured, and have low temporal resolution, making them unable to effectively investigate non-repeatable transient processes.

Method used

An ultrafast imaging device based on wavelength-time mapping is adopted. It utilizes multimode fiber bundles for wavelength-time mapping, combines spatial spectral restoration algorithms and multimode fiber bundle spectral transmission matrices, and recovers images at different times through a single measurement, simplifying the device structure and improving temporal resolution.

Benefits of technology

The device features a simple structure, high temporal resolution, and the ability to recover more images of ultrafast events from a single measurement, making it suitable for detecting non-repeatable transient processes.

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Abstract

一种基于波长‑时间映射的超快成像装置,构成包括:脉冲啁啾展宽系统、超快事件场景、多模光纤束、成像透镜、相机和计算机。其特点在于啁啾脉冲中不同的波长对应不同的时刻,从单次测量的图像中可以获取超快场景的时空信息。本发明首先采集和标定不同波长的光经过多模光纤束的图像,建立多模光纤束的光谱透射矩阵;然后利用啁啾展宽的测量脉冲对超快场景进行成像,经过成像透镜后相机单次曝光采集图像;最后通过空间光谱恢复算法和光谱透射矩阵,从采集的图像中恢复出不同波长对应时刻的图像,实现单次测量的超快成像。该装置具有结构简单、时间分辨率高,只需单次采集的图像,为探测和研究各种超快事件提供一种新的技术方案。
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